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<head><meta charset="utf-8"><title>how active.rs features land in the unstable book · t-lang/doc · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/237824-t-lang/doc/index.html">t-lang/doc</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/237824-t-lang/doc/topic/how.20active.2Ers.20features.20land.20in.20the.20unstable.20book.html">how active.rs features land in the unstable book</a></h3>

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<a name="212182509"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/237824-t-lang/doc/topic/how%20active.rs%20features%20land%20in%20the%20unstable%20book/near/212182509" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> oliver <a href="https://rust-lang.github.io/zulip_archive/stream/237824-t-lang/doc/topic/how.20active.2Ers.20features.20land.20in.20the.20unstable.20book.html#212182509">(Oct 03 2020 at 17:55)</a>:</h4>
<p>Where is the information for features such as <code>staged_api</code> and <code>rustc_private</code><br>
generated such that it renders in the unstable book?</p>



<a name="212182902"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/237824-t-lang/doc/topic/how%20active.rs%20features%20land%20in%20the%20unstable%20book/near/212182902" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Eric Huss <a href="https://rust-lang.github.io/zulip_archive/stream/237824-t-lang/doc/topic/how.20active.2Ers.20features.20land.20in.20the.20unstable.20book.html#212182902">(Oct 03 2020 at 18:04)</a>:</h4>
<p>Those aren't documented in the unstable book, so I'm a bit confused by the question.  If you mean the stubs, they are in <code>src/tools/unstable-book-gen</code>. If you mean, where you would put documentation to appear in the unstable book, that is <code>src/doc/unstable-book</code>.  But those specific attributes are documented in <a href="https://rustc-dev-guide.rust-lang.org/stability.html">https://rustc-dev-guide.rust-lang.org/stability.html</a>.</p>



<a name="212183300"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/237824-t-lang/doc/topic/how%20active.rs%20features%20land%20in%20the%20unstable%20book/near/212183300" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> oliver <a href="https://rust-lang.github.io/zulip_archive/stream/237824-t-lang/doc/topic/how.20active.2Ers.20features.20land.20in.20the.20unstable.20book.html#212183300">(Oct 03 2020 at 18:12)</a>:</h4>
<p>Hidden in plain sight, thanks!</p>



<a name="212184769"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/237824-t-lang/doc/topic/how%20active.rs%20features%20land%20in%20the%20unstable%20book/near/212184769" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> oliver <a href="https://rust-lang.github.io/zulip_archive/stream/237824-t-lang/doc/topic/how.20active.2Ers.20features.20land.20in.20the.20unstable.20book.html#212184769">(Oct 03 2020 at 18:46)</a>:</h4>
<p>Is there value in documenting some of these features which are defaulting to the<br>
generic output?</p>



<a name="212185525"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/237824-t-lang/doc/topic/how%20active.rs%20features%20land%20in%20the%20unstable%20book/near/212185525" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Eric Huss <a href="https://rust-lang.github.io/zulip_archive/stream/237824-t-lang/doc/topic/how.20active.2Ers.20features.20land.20in.20the.20unstable.20book.html#212185525">(Oct 03 2020 at 19:07)</a>:</h4>
<p>Like the stub pages?  It depends on the feature.  If it just has a link to the tracking issue, and the tracking issue contains enough documentation, there probably isn't a strong reason to add anything.  If it's just a new API in the standard lib, the docs are in the standard lib (and should be relatively easy to find via the tracking issue).  If there aren't any docs in the tracking issue, then it probably should be added either in the tracking issue or in the unstable book.  If it is the "internal only" stub, I would like to at least see <em>something</em> (a link to the relevant section of the rustc-dev-guide, or a brief description, or a link to the code if it is documented there).</p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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